/*
 * Copyright (c) 2020 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "token_generate.h"

#include <ctime>

namespace OHOS {
constexpr uint8_t TIME_LENGTH = 32;
int32_t TokenGenerate::token_ = 0;

uint64_t TokenGenerate::GenerateToken()
{
    int curSecond = time(nullptr);
    if (token_ == INT32_MAX - 1) {
        token_ = 0;
    }

    return (((uint64_t) curSecond << TIME_LENGTH) + ((uint64_t) token_++));
}
}  // namespace OHOS
